松散粉砂,loose silty sand
1)loose silty sand松散粉砂
1.Therefore, the study of static liquefaction inloose silty sand is needed, and it is the basis to study the landslide mechanism and to control or predict the geological disasters.松散粉砂是自然界中能够导致边坡发生静态液化滑坡的最常见的一种砂土类型。
2)loose dry sand松散干砂
3)loose sand layer松散砂层
1.In order to research the groundwater quality influence ofloose sand layer and its effective particle size during artificial recharge,an experimental device and method with two different effective particle size sand for contrast experiment are designed.为探讨人工回灌过程中松散砂层(介质)及其有效粒径大小对地下水水质的影响,给出了实验装置及实验方法,选择有效粒径不同的两组砂样做了对比实验。
英文短句/例句
1.A Laboratory Study on Influence of Water Quality by Loose Sand Layer and Effective Particle Size during Artifical Recharge松散砂层及其有效粒径对回灌水水质影响的实验研究
2.Research on Core Drilling in Loose Formation from In-Situ Leaching Sand Uranium Deposit;地浸砂岩型铀矿松散岩层取心钻进技术研究
3.The Research of Reasonable Setting up Pillar Coal to Prevent Sand from Collapsing in the Moderate and Thick Unconsolidated Formation;中厚松散层下防砂（塌）煤柱合理留设研究
4.Study on Retaining Safety Coal Pillar Against Sand with Fully Mechanized Caving under Thick Alluvium and Thin Bedrock;厚松散层薄基岩下综放开采留设防砂煤岩柱研究
5.granular insulation松散颗粒填充隔热层
6.Loose level(企业集团的)松散层
7.Research of Sanding Damage. and Promotion of Sand Control Technique. in Loose Reservoir of Jin 45 Region;锦45块疏松储层出砂损害研究与防砂方法优选
8.A research into drawdown pressure impacts on sand production from unconsolidated sand reservoirs生产压差对疏松砂岩储层出砂影响规律研究
9.Drag bits are used most commonly in soft formations.在松软岩层中最常用的是钢砂钻头。
10.Full-mechanized Caving Mining Test under Soft Sand Aquifer松软砂岩含水层下控水综放开采试验
11.Gravel is an unconsolidated mixture of rock fragments or pebbles.砂砾是砾石岩石碎片或卵石的松散的混合物。
12.Mechanism and protective measures of sand production in loose sandstone reservoirs-taking Taiping and Shangdian oilfield as examples疏松砂岩储层出砂机理和保护措施——以太平油田和尚店油田为例
13.Predicting Study on Inrush of Sand and Overburden Failure of the Full Mechanized Top-coal Caving under Loosening Sandstone Aquifer in the Tie-bei Coal Mine;铁北煤矿松软砂岩含水层下综放开采覆岩破坏及溃砂预测研究
14.Identification and Distribution Regularity of Gas Reservoir in Loose Sands of Qinhai Basin;青海疏松砂岩气层识别与分布规律研究
pletion fluid in unconsolidated sandstone heavy oil reservoir based on reservoir protection基于储层保护的疏松砂岩稠油油藏完井液
16.RESEARCH ON SAFETY DRILLING PERIOD OF HORIZONTAL WELL IN THE LOOSE SANDSTONE RESERVOIR疏松砂岩储层水平井安全钻井周期确定研究
17.The features of mud logging shows for the loose sandstone in shallow-middle zones in Qikou sag歧口凹陷中浅层疏松砂岩录井显示特征
18.A research on damage mechanisms of loose sand reservoirs during their production疏松砂岩油田生产过程中储层伤害机理研究
相关短句/例句
loose dry sand松散干砂
3)loose sand layer松散砂层
1.In order to research the groundwater quality influence ofloose sand layer and its effective particle size during artificial recharge,an experimental device and method with two different effective particle size sand for contrast experiment are designed.为探讨人工回灌过程中松散砂层(介质)及其有效粒径大小对地下水水质的影响,给出了实验装置及实验方法,选择有效粒径不同的两组砂样做了对比实验。
4)loose sand shell松散砂壳
1.The recent years data analysis indicates that the vibroflotation is an effective and simple method to treatloose sand shell.本文概述了岸堤水库大坝迎水坡松散砂壳振冲加固施工工艺,对比分析近年来的大坝观测资料,说明振冲是处理松散砂壳经济有效、简便易行的好方法。
5)sandrock[英]["s?ndr?k][美]["s?nd,rɑk]松散砂岩
6)free flowing powder松散粉料
延伸阅读
油井防砂和清砂对疏松油层进行层内胶固，在井筒内下筛管防止油层砂进入井内，以保证油井、注水井的正常生产，称防砂。防砂胶结疏松的砂岩颗粒随油、水进入井筒或携带至地面，会冲蚀、磨损、堵塞深井泵和管线以及地面设备,或沉积于井底,堵塞油层，使油井减产或停产；甚至油层坍塌，挤毁套管，导致油井大修或报废。采油时应根据生产动态、砂样分析及声波测井等资料，及时了解出砂原因、层位及性质，采取有效的防砂措施。防砂措施有筛管滤网和化学胶固两类，前者适用于各种完井方式，应用较广，后者主要用在套管射孔完成的井。通过试油、试采已证实出砂的油层，应考虑防砂完井。筛管滤网防砂也称机械防砂，将多缝筛管固定在带孔的钢管上，下至出砂层段并用携砂液将一定粒径的砂粒循环填充于筛管外，靠管外砂粒所形成的桥拱，滤阻油层出砂。对油层单一、无水、气夹层的井，可采用先期防砂。即油层部分用扩眼钻头扩眼后，再下入筛管填砂（见图）。对多层合采或有水、气夹层的井，用射孔完井。清洗套管和炮眼后，再在套管内下筛管填砂。筛管的结构，从割缝到外包金属网或预填砾石，发展到用有机或无机材料预制滤管。目前多用梯形截面的不锈钢丝点焊成强度高、渗滤面大、耐腐蚀的金属绕丝滤管。此法要求根据砂样粒度分析资料，选定筛管缝宽及填入砂粒的直径。化学防砂向出砂油层注入一定量的化学胶结剂，将油层砂子胶固在一起。常用的胶结剂有树脂类（如酚醛树脂、环氧树脂等），有时也用水泥类材料。要求胶结剂在固结时体积收缩，或加入增孔剂，造成一定的渗透性，以尽量减少对产量的影响。对已经大量出砂的油层，用下列方法形成有渗透性的人工井壁：①将砂与胶结剂按比例混合后,挤入地层；②预先向出砂层填砂,再将原料如甲醛和苯酚以及固化剂按序挤入地层，在地层条件下合成树脂；③石英砂外包一层树脂，在未完全固化前挤入地层，在油层温度条件下固化；④用N2作载体把SiCl4蒸气引入油层，使之分解,析出的Si对疏松砂子起胶结作用。化学防砂的优点是可用于同井多油层防砂，不缩小井眼；缺点是成本较高，易降低出砂层的生产能力，对于油井先期防砂或注水井防砂，效果较好。清砂清除井底沉砂，一般下入油管，用洗井液循环冲洗，带出地面。炮眼内积砂，用专门的洗井封隔器分段冲洗。井下深井泵等设备内的积砂，须将设备起出地面，检查清理。参考书目T. O. Allen & A.P.Roberts, Production Opera- tions,Vol.2,2nd ed.,Oil & Gas Consultants Inter-national,Tulsa,1982.
